634242125035555 has 16 divisors (see below), whose sum is σ = 793327140519840. Its totient is φ = 486311993240832.

The previous prime is 634242125035529. The next prime is 634242125035567. The reversal of 634242125035555 is 555530521242436.

It is a cyclic number.

It is not a de Polignac number, because 634242125035555 - 2¹³ = 634242125027363 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25584583210 + ... + 25584607999.

It is an arithmetic number, because the mean of its divisors is an integer number (49582946282490).

Almost surely, 2^{634242125035555} is an apocalyptic number.

634242125035555 is a deficient number, since it is larger than the sum of its proper divisors (159085015484285).

634242125035555 is a wasteful number, since it uses less digits than its factorization.

634242125035555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51169191318.

The product of its (nonzero) digits is 21600000, while the sum is 52.

The spelling of 634242125035555 in words is "six hundred thirty-four trillion, two hundred forty-two billion, one hundred twenty-five million, thirty-five thousand, five hundred fifty-five".